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dt-bindings: clock: Document external clocks for MSM8998 gcc 

The global clock controller on MSM8998 can consume a number of external
clocks.  Document them.

For 7180 and 8150, the hardware always exists, so no clocks are truly
optional.  Therefore, simplify the binding by removing the min/max
qualifiers to clocks.  Also, fixup an example so that dt_binding_check
passes.

Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lkml.kernel.org/r/1576595987-10043-1-git-send-email-jhugo@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Jeffrey Hugo 2019-12-17 08:19:47 -07:00 committed by Stephen Boyd
parent bb9b9cde0f
commit d109ea0970
1 changed files with 59 additions and 14 deletions
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73
Documentation/devicetree/bindings/clock/qcom,gcc.yaml
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@ -40,20 +40,40 @@ properties:
- qcom,gcc-sm8150
clocks:
minItems: 1
maxItems: 3
items:
- description: Board XO source
- description: Board active XO source
- description: Sleep clock source
oneOf:
#qcom,gcc-sm8150
#qcom,gcc-sc7180
- items:
- description: Board XO source
- description: Board active XO source
- description: Sleep clock source
#qcom,gcc-msm8998
- items:
- description: Board XO source
- description: Sleep clock source
- description: USB 3.0 phy pipe clock
- description: UFS phy rx symbol clock for pipe 0
- description: UFS phy rx symbol clock for pipe 1
- description: UFS phy tx symbol clock
- description: PCIE phy pipe clock
clock-names:
minItems: 1
maxItems: 3
items:
- const: bi_tcxo
- const: bi_tcxo_ao
- const: sleep_clk
oneOf:
#qcom,gcc-sm8150
#qcom,gcc-sc7180
- items:
- const: bi_tcxo
- const: bi_tcxo_ao
- const: sleep_clk
#qcom,gcc-msm8998
- items:
- const: xo
- const: sleep_clk
- const: usb3_pipe
- const: ufs_rx_symbol0
- const: ufs_rx_symbol1
- const: ufs_tx_symbol0
- const: pcie0_pipe
'#clock-cells':
const: 1
@ -118,6 +138,7 @@ else:
compatible:
contains:
enum:
- qcom,gcc-msm8998
- qcom,gcc-sm8150
- qcom,gcc-sc7180
then:
@ -179,10 +200,34 @@ examples:
clock-controller@100000 {
compatible = "qcom,gcc-sc7180";
reg = <0x100000 0x1f0000>;
clocks = <&rpmhcc 0>, <&rpmhcc 1>;
clock-names = "bi_tcxo", "bi_tcxo_ao";
clocks = <&rpmhcc 0>, <&rpmhcc 1>, <0>;
clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk";
#clock-cells = <1>;
#reset-cells = <1>;
#power-domain-cells = <1>;
};
# Example of MSM8998 GCC:
- |
clock-controller@100000 {
compatible = "qcom,gcc-msm8998";
#clock-cells = <1>;
#reset-cells = <1>;
#power-domain-cells = <1>;
reg = <0x00100000 0xb0000>;
clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>,
<&sleep>,
<0>,
<0>,
<0>,
<0>,
<0>;
clock-names = "xo",
"sleep",
"usb3_pipe",
"ufs_rx_symbol0",
"ufs_rx_symbol1",
"ufs_tx_symbol0",
"pcie0_pipe";
};
...